Nuclear Wastes are located in the sea all around Los Santos. You can collect them all pretty easily using the provided Trackify app.

To unlock this side mission, purchase the Sonar Docks at Paleto Cove after completing "The Merryweather Heist" and a free Minisub will appear at the jetty. You need to use the Minisub to find all the Nuclear Waste pieces. Each barrel is worth $23,000 upon discovery and an additional $250,000 once you collect all of them.

This is the first barrel that the Traciky app finds just a few clicks away from the Sonar Docks.

The next barrel is located just a few feet away from the first one.

The third barrel is another feew feet away from the second one and is sitting on a red-colored rock formation. (The next barrel in the area is all the way on the other side of Paleto Bay so prepare for a long drive.)

The fourth barrel is all the way up Paleto Bay and is nearly 430 feet below crushing depth. You'll have to descend between the huge rock crevices to find this lonely little barrel.

The fifth barrel is further up the bay and is located under a large rock archway formation.

The sixth barrel is located on the side of the rock wall. You'll need to ascend around the bottom corner to see it.

The seventh barrel is located on a rock ledge just below crushing depth. Avoid descending too far to the ocean floor and search for the ledge on the rock wall.

The eighth barrel is also located below crushing depth just a few feet away from the seventh barrel. This one is located a bit higher but is sitting on a flat surface on a rock ledge.

The ninth barrel is located all the way up the surface next to a rock wall.

The tenth barrel (and final one for the Paleto Cove/Paleto Bay area) is just further up from the ninth barrel and sitting on the ocean floor. After finding this barrel, the drive to the next one will be lengthy, so be prepared!

The eleventh barrel is the most confusing one to find because although the Trackify app identifies it's location, the actual barrel itself is not visible. To collect it, float above the red dot on the Trackify app and then descend onto the ocean floor until the sub retrieves it.

The twelvth barrel is several feet away from the previous one and is sitting on the ocean floor.

The thirteenth (and last) barrel for the San Chianski area is located near the surface level towards the beach. After picking up this barrel, get ready for another long drive down the coast to the next one.

The fourteenth barrel is located off the Palomino Highlands coast on the ocean floor.

The fifteenth barrel is a far drive up the ocean past the landmass peninsula. The barrel is located below crushing depth and is sitting on a rock ledge.

The sixteenth barrel is a far drive from the previous one and is located in between a rock crevice just near crushing depth.

The seventeenth barrel is farther away from the sixteenth barrel and is located on the ocean floor.

The 18th barrel is located further up from the previous one and is sitting on a rock on the ocean floor. That's the last barrel for the eastern section of Los Santos! From here, you have to drive the sub all the way around the docks/airport to Vespucci Beach to find the next barrel.

The 19th barrel is located at Del Perro right underneath the Del Perro Pier. The barrel is sitting between the wooden stilts.

The 20th barrel is further up the beach and is located on the ocean floor.

The 21st barrel is a few clicks away from the previous one towards the ocean. The barrel is located on a rock ledge between several rock walls.

The 22nd barrel is located up towards Pacific Bluffs and siiting on the ocean floor next to a rock wall.

The 23rd barrel is further up the bluffs and is sitting on the ledge of a rock wall. This is the last barrel for the beach area so gear up and drive up the coast towards Chumash to find the next batch.

The 24th barrel is located just off the Chumash coast and is sitting on the ocean floor.

The 25th barrel is a long drive up the coast towards Zancudo and is sitting on the ocean floor.

The 26th barrel is probably the most difficult to see (but not difficult to find). As you drive towards Zancudo, the waters begin to turn bright brown (sewage?), so you'll need to watch to Trackify app and then look for the glowing barrel sitting on a rock ledge.

The 27th barrel is all the way at northern Chumash, so be ready for a long drive. The barrel is located on the ocean floor.

The 28th barrel is located just a few clicks away from the previous one. The barrel is sitting on the ocean floor.

Almost there! The 29th barrel is located further up from the previous one. The barrel is located just near crushing depth and is sitting on a rock ledge. Descend between the large rocks to find the barrel on that ledge.

The 30th (and FINAL) barrel is close by to the previous one. The barrel is located at crushing depths at the bottom of the ocean floor.